Kain Highwind is one of the main playable characters of Final Fantasy IV, and Cecil Harvey's toughest rival and best friend. Kain has strong feelings for Rosa as well, and he does his best not to show them. He finds himself in the service of Golbez after Cecil is relieved of his command of Baron's Red Wings.

"The commander of the Baron Dragoons. Like Cecil, Kain lost both parents at an early age and was subsequently raised by Baron's king. He has long been a friend and a rival to Cecil." (Game Description)

Kain was born in Baron, and was raised with Cecil by the King of Baron. The king wanted Kain to become a Dark Knight like Cecil was, but Kain wanted to follow in his father's footsteps of being a Dragoon and defending the castle. As the adventure opens, Kain tries to defend Cecil after Cecil was discharged from the command of the Red Wings.

Kain is the gifted captain of an elite airship squad, the Baron's Dragoons. He is also Cecil's friend and rival--a rivalry that turns real when Golbez manipulates Kain to stand against his old companions. - official description

Kain is a playable character representing Final Fantasy IV. He can be acquired by completing the Final Fantasy IV dungeon Mist Cave (Classic) for the first time.

Kain has two Record Materia. Heart of the Dragoon is awarded for breaking Kain's level cap, and allows him to deal slightly more damage with Jump. Brainwash is acquired by using Kain's Jump to break Barbariccia out of Whirlwind in the Tower of Zot Pinnacle - Top Floor (Elite) dungeon. It causes Kain to begin battle Confused, but with bonuses to Attack and Defense.